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  1. Truncated icosahedron - Wikipedia

    • In geometry, the truncated icosahedron is a polyhedron that can be constructed by truncating all of the regular icosahedron's vertices. Intuitively, it may be regarded as footballs (or soccer balls) that are typically patterned with white hexagons and black pentagons. It can be found in the application of geodesic dome structures such as those whose … See more

    Construction

    The truncated icosahedron can be constructed from a regular icosahedron by cutting off all of its vertices, known as truncation. Each of the 12 vertices at the one-third mark of each edge creates 12 pentagona… See more

    Properties

    The surface area and the volume of the truncated icosahedron of edge length are: The sphericity of a polyhedron describes how closely a polyhedron resembles a sphere. It can be defined as the ratio of the surface area of a s… See more

     
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  2. Soccer balls are spherical in shape, as they identify as truncated icosahedrons under the polyhedral family tree. Their roundness ensures the retention of their structural integrity and bounce uniformity when kicked.
    soccerwhizz.com/are-soccer-balls-spheres/
    The soccer ball is essentially a Buckminster Ball consisting of 20 hexagonal (six sided) and 12 pentagonal (five sided) surfaces. Also known as a truncated icosahedron except that it is more spherical, because the panels bulge due to the pressure of the air inside. When they are sewn together and inflated they make a near perfect sphere.
    soccerballworld.com/soccer-ball-construction-and-…
    Various leagues and games use different balls, though they all have one of the following basic shapes: a sphere: used in association football and Gaelic football a prolate spheroid (elongated sphere) either with rounded ends: used in the rugby codes and Australian football or with more pointed ends: used in American football
    en.wikipedia.org/wiki/Football_(ball)
    The balls used in association football and team handball are perhaps the best-known example of a spherical polyhedron analog to the truncated icosahedron, found in everyday life.
    en.wikipedia.org/wiki/Truncated_icosahedron
    The reason a football bounces so strangely is because of its shape. A football is a prolate spheroid, and it’s shaped that way because that’s also the shape of an inflated pig’s bladder, which is what the first footballs were made of.
    ideas.time.com/2013/12/30/how-the-football-got-its …
     
  3. Super Bowl History: Why Are Footballs Shaped Like That? - TIME

     
  4. How the NFL Football Got Its Shape - Live Science

    Sep 8, 2010 · Today, the ball size and shape have been standardized. For both NFL and NCAA balls, the dimensions are 11 to 11 1?2 inches along the long axis with a circumference around the middle...

  5. Football (ball) - Wikipedia

  6. What Geometric Shape Is a Football? - Reference.com

    Aug 4, 2015 · Footballs used for the game of soccer are truncated icosahedrons, three-dimensional objects with 32 sides. Prolate spheroids and truncated icosahedrons both have their advantages as playing ball shapes. The prolate …

  7. What Is the Shape of a Football? And Why It Matters

    So, what is the shape of a football? The shape of a football is an elongated spheroid or prolate spheroid. It features two pointed ends and a longer axis, allowing for tight spirals during throws, influencing ball behavior on the field, …

  8. The History of the Football – The Actual Ball - I-ASC

    The truth is that American football’s shape is the result of evolution (change over time) more than DESIGN (plan to make something). This PROLATE SPHEROID (egg-shaped) ball did not look like it does now in the early years of the game.

  9. How Did the Pigskin Get Its Shape? | Smithsonian

  10. Ball (association football) - Wikipedia

    A football or soccer ball is the ball used in the sport of association football. The ball's spherical shape, as well as its size, weight, mass, and material composition, are specified by Law 2 of the Laws of the Game maintained by the …

  11. How the Football Got Its Shape - TIME.com

    Dec 30, 2013 · A football is a prolate spheroid, and it’s shaped that way because that’s also the shape of an inflated pig’s bladder, which is what the first footballs were made of. Soccer balls were also...

  12. Football Size, Shape and Design | The History Of The …

    Oct 13, 2017 · When Mitre started mass-producing balls in 1888, they believed that one of the most important qualities was that the ball could keep its shape. Because of that very thick and heavy leather was used, with cow’s rump …

  13. NFL Football Ball Guide: Specs, Inspections, and Quality

  14. Why Is a Football Football-Shaped? - The Strong National …

  15. History of the Football: Watch How Wilson Crafts Its NFL Ball

  16. Step inside the factory where the NFL’s footballs are made

  17. Why a football is shaped the way it is | 11alive.com

  18. How the Football Got Its Shape - TIME

  19. What Do a Submarine, a Rocket and a Football Have in Common?

  20. American Football Dimensions & Drawings | Dimensions.com

  21. Spherical polyhedron - Wikipedia

  22. Orbita Liga Portugal Soccer Ball - PUMA